fix(deps): update dependency nanoid to v3.3.18 [security] #7
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This PR contains the following updates:
3.3.3→3.3.18Predictable results in nanoid generation when given non-integer values
CVE-2024-55565 / GHSA-mwcw-c2x4-8c55
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Details
When nanoid is called with a fractional value, there were a number of undesirable effects:
Version 3.3.8 and 5.0.9 are fixed.
Severity
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:NReferences
This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).
nanoid: Integer Overflow or Wraparound
CVE-2026-73086 / GHSA-xwg4-73v4-xw9w
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Details
Summary
An integer overflow in
nanoid(size)permanently corrupts the process-wide CSPRNG pool, causing all subsequent ID generation to return the deterministic string"uuuuuuuuuuuuuuuuuuuuu". Any application that passes user-influenced values to thesizeparameter loses all randomness guarantees for session tokens, CSRF tokens, and unique identifiers until process restart.Details
nanoid()atindex.js:101coerces thesizeparameter withsize |= 0, which converts it to a signed 32-bit integer. Whensize >= 2^31(e.g.,2147483648), this wraps to-2147483648.The negative value is passed to
fillPool()(index.js:15):Neither branch triggers, so the pool is never refreshed.
poolOffsetbecomes ~-2.1 billion.Subsequent
nanoid()calls execute:pool[negative_index]returnsundefined.undefined & 63evaluates to0.urlAlphabet[0]is'u'. Every ID becomes"uuuuuuuuuuuuuuuuuuuuu".The corruption is persistent — it affects all subsequent calls in the process until ~100 million calls eventually wrap
poolOffsetback to positive, or the process restarts.PoC
Run with:
node --experimental-vm-modules poc.mjsAttack scenario: Any API endpoint that accepts a user-controlled length/size parameter (URL shortener slug length, configurable token size, etc.) and passes it to
nanoid(userInput).Impact
Complete loss of ID unpredictability and uniqueness, process-wide, from a single request.
nanoidin the same processsizeparameter without validationSeverity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NReferences
This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).
nanoid: non-secure generators can loop indefinitely with negative size
CVE-2026-67214 / GHSA-28wg-ghj8-5hjv
More information
Details
nanoid (Nano ID) before 5.1.16 contains an infinite loop in the customAlphabet and nanoid functions of its non-secure module (nanoid/non-secure). When these functions are given a negative size, the loop counter is decremented from a negative value and never reaches its termination condition, spinning indefinitely and hanging the calling thread. An application that passes an unvalidated, attacker-controlled negative size to these functions is exposed to a denial-of-service condition.
Severity
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NReferences
This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).
nanoid: custom generators can loop indefinitely when size is zero
CVE-2026-67213 / GHSA-2v37-7h3g-55p8
More information
Details
nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.
Severity
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:NReferences
This data is provided by OSV and the GitHub Advisory Database (CC-BY 4.0).
Release Notes
ai/nanoid (nanoid)
v3.3.18Compare Source
v3.3.17Compare Source
v3.3.16Compare Source
v3.3.15Compare Source
v3.3.14Compare Source
v3.3.13Compare Source
v3.3.12Compare Source
v3.3.11Compare Source
v3.3.10Compare Source
v3.3.9Compare Source
v3.3.8Compare Source
v3.3.7Compare Source
node16TypeScript support (by Saadi Myftija).v3.3.6Compare Source
v3.3.5Compare Source
v3.3.4Compare Source
--helpin CLI (by @Lete114).Configuration
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